D) Methanogen is the awnser
<span>The characteristics that scientists used to classify living organisms into six kingdoms include the following:
1. Cell type: living organisms are classified into prokaryotes and eukaryotes based on the presence of nucleus and distinct arrangement of the organelles in their cells.
2. Mobility: living organisms are categorized into kingdoms based on their ability or inability to move about.
3. Cell structure: the cells structure was used to divide living organisms into plants and animals. Those living organisms that have cell wall are classified as plants while those who do not have cell wall are classified as animals.
4. Number of cells: living organisms that are made up of only one cell are classified as unicellular while those with many cells are termed multi cellular.
5. Reproduction method: living organisms are classified based on whether they reproduce sexually or asexually.
6. Manner of obtaining energy: living organisms that can prouduce their own food are called autotrophs while those that can not produce their own foood are termed heterotrophs. Plants are essentially categorised as autotrophs while animals are described as heterotrophs.</span>
Change/transformed
Explanation:
Igneous rocks can be transformed or changed to form metamorphic rocks in the presence of elevated pressure and temperature.
Metamorphic rocks are also called changed rocks in which a rock protolith especially from igneous or sedimentary rocks is transformed.
- In igneous rocks, minerals are recrystallized to form new ones
- The metamorphic rocks contain minerals that typifies them.
- Some metamorphic rocks can be formed at elevated pressure alone with increasing burial.
- Some can from through contact metamorphism where high temperature is the determining re-crystallization factor.
- Most metamorphic rocks form under conditions of high temperature and pressure.
- Examples of metamorphic rocks are schist, gneiss, talc etc.
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One of the major negative factors from urbanization is A. impervious surface, creating more runoff and less fresh water infiltration.
Runoff refers to the draining of water, which happens more and more as societies progress and advance, and as new towns and cities are created as a result of urbanization. Also, there will be less and less fresh water, which is why urbanization needs to be controlled.
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